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Defensibility Assessment

Measures each advantage in months to replicate, since anything copyable in a quarter is a feature rather than a moat.

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CategoryStrategyForFounders, ConsultantsTested onClaudeChatGPT

Running it, start to finish

  1. Put a months-to-replicate number on every claimed advantage.
  2. Identify which advantages compound and which are a fixed lead.
  3. Invest in the slower work that builds a real position.

What you get back

The output this produces, every time.

  • Measures each advantage in months to replicate, converting a vague claim into an arguable number.
  • Separates compounding advantages from a fixed lead being eroded.
  • Names what is being called a moat and is not, which is usually most of the list.

Getting better results

Where this usually goes wrong, and how to avoid it.

  • Check network effects are real. They are claimed far more often than they exist. Ask whether a user genuinely benefits from other users being there.
  • Watch the adjacent player with distribution. It is the most common way an established position falls, and it rarely appears on a competitor list.
  • A temporary lead is fine if you know it. It means this year's job is converting the lead into something durable, which is a different plan from defending it.

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Written for The AI University. Every prompt in this library is original work — authored, tested and revised here, not collected from elsewhere. 365 of them, free with an account.